This bunker or gun emplacement was built in 1942. The round turrets on either side held 6 inch guns. The horseshoe shaped structures visible out in front at low tide are Panama mounts, built in July 1941 before the more permanent bunker and used for four 155mm coast artillery guns. A sister bunker stands across the bay in Lewes, Delaware. When built in 1942, the bunker was covered with sod and stood on high ground 900 feet from the ocean. It is built of reinforced concrete, with a roof and walls 6 feet thick. Erosion and storms have washed away the land in front of and under the bunker, leaving pilings meant only to stabilize it to support a structure weighing thousands of tons.